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vtkImageButterworthHighPass.h
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vtkImageButterworthHighPass.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageButterworthHighPass.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkImageButterworthHighPass
* @brief Frequency domain high pass.
*
* This filter only works on an image after it has been converted to
* frequency domain by a vtkImageFFT filter. A vtkImageRFFT filter
* can be used to convert the output back into the spatial domain.
* vtkImageButterworthHighPass the frequency components around 0 are
* attenuated. Input and output are in doubles, with two components
* (complex numbers).
* out(i, j) = 1 / (1 + pow(CutOff/Freq(i,j), 2*Order));
*
* @sa
* vtkImageButterworthLowPass
*/
#ifndef vtkImageButterworthHighPass_h
#define vtkImageButterworthHighPass_h
#include "vtkImagingFourierModule.h" // For export macro
#include "vtkThreadedImageAlgorithm.h"
class VTKIMAGINGFOURIER_EXPORT vtkImageButterworthHighPass : public vtkThreadedImageAlgorithm
{
public:
static vtkImageButterworthHighPass *New();
vtkTypeMacro(vtkImageButterworthHighPass,vtkThreadedImageAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@{
/**
* Set/Get the cutoff frequency for each axis.
* The values are specified in the order X, Y, Z, Time.
* Units: Cycles per world unit (as defined by the data spacing).
*/
vtkSetVector3Macro(CutOff,double);
void SetCutOff(double v) {this->SetCutOff(v, v, v);}
void SetXCutOff(double v);
void SetYCutOff(double v);
void SetZCutOff(double v);
vtkGetVector3Macro(CutOff,double);
double GetXCutOff() {return this->CutOff[0];}
double GetYCutOff() {return this->CutOff[1];}
double GetZCutOff() {return this->CutOff[2];}
//@}
//@{
/**
* The order determines sharpness of the cutoff curve.
*/
vtkSetMacro(Order, int);
vtkGetMacro(Order, int);
//@}
protected:
vtkImageButterworthHighPass();
~vtkImageButterworthHighPass() override {}
int Order;
double CutOff[3];
void ThreadedRequestData(vtkInformation *request,
vtkInformationVector **inputVector,
vtkInformationVector *outputVector,
vtkImageData ***inData, vtkImageData **outData,
int outExt[6], int id) override;
private:
vtkImageButterworthHighPass(const vtkImageButterworthHighPass&) = delete;
void operator=(const vtkImageButterworthHighPass&) = delete;
};
#endif